[RemoveDIs] Update update_test_checks script to recognize dbg_records (#87388)

As we've added new IR elements for the RemoveDIs project,
we need the update_test_checks script to understand them. For the
records themselves this is already done automatically, but their
metadata arguments are not recognized as such due to lacking the
`metadata` prefix, which means they won't be checked by the script. This
patch fixes this by adding a check for all `![0-9]+` patterns as long as
they are not at the start of a line (which avoids matching global
values).

Author: SLTozer

llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/various_ir_values_dbgrecords.ll

@@ -0,0 +1,168 @@
+; Just run it through opt, no passes needed.
+; RUN: opt < %s -S --write-experimental-debuginfo=true | FileCheck %s
+
+; ModuleID = 'various_ir_values.c'
+source_filename = "various_ir_values.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Function Attrs: nounwind uwtable
+define dso_local void @foo(ptr %A) #0 !dbg !7 {
+entry:
+  %A.addr = alloca ptr, align 8, !DIAssignID !16
+  %i = alloca i32, align 4
+    #dbg_assign(i1 undef, !13, !DIExpression(), !16, ptr %A.addr, !DIExpression(), !17)
+  store ptr %A, ptr %A.addr, align 8, !tbaa !18
+    #dbg_declare(ptr %A.addr, !13, !DIExpression(), !17)
+  call void @llvm.lifetime.start.p0(i64 4, ptr %i) #2, !dbg !22
+    #dbg_declare(ptr %i, !14, !DIExpression(), !23)
+  store i32 0, ptr %i, align 4, !dbg !23, !tbaa !24
+  br label %for.cond, !dbg !22
+
+for.cond:                                         ; preds = %for.inc, %entry
+  %0 = load i32, ptr %i, align 4, !dbg !26, !tbaa !24
+  %1 = load ptr, ptr %A.addr, align 8, !dbg !28, !tbaa !18
+  %2 = load i32, ptr %1, align 4, !dbg !29, !tbaa !24
+  %cmp = icmp slt i32 %0, %2, !dbg !30
+  br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !31, !prof !32
+
+for.cond.cleanup:                                 ; preds = %for.cond
+  call void @llvm.lifetime.end.p0(i64 4, ptr %i) #2, !dbg !33
+  br label %for.end
+
+for.body:                                         ; preds = %for.cond
+  %3 = load ptr, ptr %A.addr, align 8, !dbg !34, !tbaa !18
+  %4 = load i32, ptr %i, align 4, !dbg !35, !tbaa !24
+  %idxprom = sext i32 %4 to i64, !dbg !34
+  %arrayidx = getelementptr inbounds i32, ptr %3, i64 %idxprom, !dbg !34
+  store i32 0, ptr %arrayidx, align 4, !dbg !36, !tbaa !24
+  br label %for.inc, !dbg !34
+
+for.inc:                                          ; preds = %for.body
+  %5 = load i32, ptr %i, align 4, !dbg !37, !tbaa !24
+  %inc = add nsw i32 %5, 1, !dbg !37
+  store i32 %inc, ptr %i, align 4, !dbg !37, !tbaa !24
+  br label %for.cond, !dbg !33, !llvm.loop !38
+
+for.end:                                          ; preds = %for.cond.cleanup
+  ret void, !dbg !40
+}
+
+; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
+declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
+
+; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
+declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
+
+; Function Attrs: nounwind uwtable
+define dso_local void @bar(ptr %A) #0 !dbg !41 {
+entry:
+  %A.addr = alloca ptr, align 8
+  %i = alloca i32, align 4
+  store ptr %A, ptr %A.addr, align 8, !tbaa !18
+    #dbg_declare(ptr %A.addr, !43, !DIExpression(), !46)
+  call void @llvm.lifetime.start.p0(i64 4, ptr %i) #2, !dbg !47
+    #dbg_declare(ptr %i, !44, !DIExpression(), !48)
+  store i32 0, ptr %i, align 4, !dbg !48, !tbaa !24
+  br label %for.cond, !dbg !47
+
+for.cond:                                         ; preds = %for.inc, %entry
+  %0 = load i32, ptr %i, align 4, !dbg !49, !tbaa !24
+  %1 = load ptr, ptr %A.addr, align 8, !dbg !51, !tbaa !18
+  %2 = load i32, ptr %1, align 4, !dbg !52, !tbaa !24
+  %cmp = icmp slt i32 %0, %2, !dbg !53
+  br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !54
+
+for.cond.cleanup:                                 ; preds = %for.cond
+  call void @llvm.lifetime.end.p0(i64 4, ptr %i) #2, !dbg !55
+  br label %for.end
+
+for.body:                                         ; preds = %for.cond
+  %3 = load ptr, ptr %A.addr, align 8, !dbg !56, !tbaa !18
+  %4 = load i32, ptr %i, align 4, !dbg !57, !tbaa !24
+  %idxprom = sext i32 %4 to i64, !dbg !56
+  %arrayidx = getelementptr inbounds i32, ptr %3, i64 %idxprom, !dbg !56
+  store i32 0, ptr %arrayidx, align 4, !dbg !58, !tbaa !24
+  br label %for.inc, !dbg !56
+
+for.inc:                                          ; preds = %for.body
+  %5 = load i32, ptr %i, align 4, !dbg !59, !tbaa !24
+  %inc = add nsw i32 %5, 1, !dbg !59
+  store i32 %inc, ptr %i, align 4, !dbg !59, !tbaa !24
+  br label %for.cond, !dbg !55, !llvm.loop !60
+
+for.end:                                          ; preds = %for.cond.cleanup
+  ret void, !dbg !62
+}
+
+attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "denormal-fp-math"="ieee,ieee" "denormal-fp-math-f32"="ieee,ieee" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
+attributes #2 = { nounwind }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5}
+!llvm.ident = !{!6}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0 ([email protected]:llvm/llvm-project.git 1d5da8cd30fce1c0a2c2fa6ba656dbfaa36192c8)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
+!1 = !DIFile(filename: "various_ir_values.c", directory: "/data/build/llvm-project")
+!2 = !{}
+!3 = !{i32 7, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"wchar_size", i32 4}
+!6 = !{!"clang version 11.0.0 ([email protected]:llvm/llvm-project.git 1d5da8cd30fce1c0a2c2fa6ba656dbfaa36192c8)"}
+!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
+!8 = !DISubroutineType(types: !9)
+!9 = !{null, !10}
+!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
+!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!12 = !{!13, !14}
+!13 = !DILocalVariable(name: "A", arg: 1, scope: !7, file: !1, line: 1, type: !10)
+!14 = !DILocalVariable(name: "i", scope: !15, file: !1, line: 3, type: !11)
+!15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 3)
+!16 = distinct !DIAssignID()
+!17 = !DILocation(line: 1, column: 15, scope: !7)
+!18 = !{!19, !19, i64 0}
+!19 = !{!"any pointer", !20, i64 0}
+!20 = !{!"omnipotent char", !21, i64 0}
+!21 = !{!"Simple C/C++ TBAA"}
+!22 = !DILocation(line: 3, column: 8, scope: !15)
+!23 = !DILocation(line: 3, column: 12, scope: !15)
+!24 = !{!25, !25, i64 0}
+!25 = !{!"int", !20, i64 0}
+!26 = !DILocation(line: 3, column: 19, scope: !27)
+!27 = distinct !DILexicalBlock(scope: !15, file: !1, line: 3, column: 3)
+!28 = !DILocation(line: 3, column: 24, scope: !27)
+!29 = !DILocation(line: 3, column: 23, scope: !27)
+!30 = !DILocation(line: 3, column: 21, scope: !27)
+!31 = !DILocation(line: 3, column: 3, scope: !15)
+!32 = !{!"branch_weights", i32 1, i32 1048575}
+!33 = !DILocation(line: 3, column: 3, scope: !27)
+!34 = !DILocation(line: 4, column: 5, scope: !27)
+!35 = !DILocation(line: 4, column: 7, scope: !27)
+!36 = !DILocation(line: 4, column: 10, scope: !27)
+!37 = !DILocation(line: 3, column: 27, scope: !27)
+!38 = distinct !{!38, !31, !39}
+!39 = !DILocation(line: 4, column: 12, scope: !15)
+!40 = !DILocation(line: 5, column: 1, scope: !7)
+!41 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 7, type: !8, scopeLine: 7, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !42)
+!42 = !{!43, !44}
+!43 = !DILocalVariable(name: "A", arg: 1, scope: !41, file: !1, line: 7, type: !10)
+!44 = !DILocalVariable(name: "i", scope: !45, file: !1, line: 9, type: !11)
+!45 = distinct !DILexicalBlock(scope: !41, file: !1, line: 9, column: 3)
+!46 = !DILocation(line: 7, column: 15, scope: !41)
+!47 = !DILocation(line: 9, column: 8, scope: !45)
+!48 = !DILocation(line: 9, column: 12, scope: !45)
+!49 = !DILocation(line: 9, column: 19, scope: !50)
+!50 = distinct !DILexicalBlock(scope: !45, file: !1, line: 9, column: 3)
+!51 = !DILocation(line: 9, column: 24, scope: !50)
+!52 = !DILocation(line: 9, column: 23, scope: !50)
+!53 = !DILocation(line: 9, column: 21, scope: !50)
+!54 = !DILocation(line: 9, column: 3, scope: !45)
+!55 = !DILocation(line: 9, column: 3, scope: !50)
+!56 = !DILocation(line: 10, column: 5, scope: !50)
+!57 = !DILocation(line: 10, column: 7, scope: !50)
+!58 = !DILocation(line: 10, column: 10, scope: !50)
+!59 = !DILocation(line: 9, column: 27, scope: !50)
+!60 = distinct !{!60, !54, !61}
+!61 = !DILocation(line: 10, column: 12, scope: !45)
+!62 = !DILocation(line: 11, column: 1, scope: !41)